MAX232 is not a "simple component" as you say in the video description. I was searching for something built out of discrete components, no MAX232 or any IC. I think that anybody can construct this converter using MAX232 and doesn't need your lengthy video. It's all in the datasheet, folks...
Nice little project there! To save on having to make solder bridges might I suggest you could have used the leads from the components to make the connections. Just solder the component in place then bend the lead down and solder to next point then cut.
Eric William -MKme Tech Hey there thanks for the comment. Yeah this is just one of those handy little guys that you always think about making but never do lol.
Would you recommend not clipping off the extra tail left off after soldering down the capacitors and use the tail to bridge the gap between the capacitor and the pin of the IC rather than making a solder bridge? I found this saves solder and is less finicky.
I always keep a tub with component leads i have cut off, and use those to make connections instead of trying to mess around with making solder bridges. I just find it so much easier, but I am sure some people don't want the hassle of keeping component leads lol
Great video.. Thank you... My project requires rs232 at no more than plus or minus 5Volts(I think it's known as Low Level RS232)..Is there a simple way of limiting the Voltage swing on your device...Thank you in advance..John...Bristol..UK
What is the device you are connecting? Normally if there is 5V involved it is usually on the TTL side and is +5V = 1 0V = 0 but on PC's and other DTE/DCE devices they are usually -12V = 1 +12V = 0 something like that. If it is a different way the chip I use the MAX232 chip will not work with it since it is charge pumping to +/-12V logic for standard DTE/DCE deviecs. Maxim semi may may another type for what you need you may just have to check their website. Or Texas instruments would be another good place to check.
misperry Thank you for your reply..In the last 24 hours, the problem has gone away! I was trying to configure a Gamma 868 radio transceiver from RF Solutions in the UK..Their manual said that to achieve this! I would need 'low level rs232' serial with a max of 5Volts.. After many hours of getting no response from the module, I found that the manual was incorrect ! It simply needed TTL serial.. Strangely, RF solutions insist it's rs232...I disagree.....So thank you again for responding, but the problem is now solved..Thank you for great videos..John
Well all this device does is convert the voltage levels. It does not do the USB to Serial conversion. It simply changes TTL voltage levels 0V to +5V convert to -12V to +12V. You could use a usb micro connector but remember it does not convert the usb to serial you would need a FTDI chip like FT2232D that will perform the USB conversion to RS232.
hey sir , I like the video and how you put everything together, I am doing a project that involves the use of RS232 to TTL converter . I want to test the device and see if there is any data is sent or received ? I am using a PIC kit 2 (44-demo pin ) and i want to send data from My pc to the micro controller ? thank you
This is one of those handy devices to have in your lab. It allows you to connect a PC straight to a microcontroller. A PC uses -12 to +12V for it's serial signaling where a micro only uses TTL (transistor to transistor logic) that is only 0 - 5V. Thus, the need for the converter so you don't smoke your micro.
misperry, can you use it to have your microcontroller communicate to RS232 devices, like a serial printer or control a projector TV? Do uou need a special Aduino IDE to use it?
As long as you know the serial protocol for the RS232 device you are wanting to control you can connect a microcontroller to the TTL side of this converter and then the RS232 device to the RS232 side of the converter. All it is, is a level converter to convert the 0 to 5V logic into the -12V to 12V RS232 levels.
MAX232 is not a "simple component" as you say in the video description. I was searching for something built out of discrete components, no MAX232 or any IC. I think that anybody can construct this converter using MAX232 and doesn't need your lengthy video. It's all in the datasheet, folks...
Nice little project there! To save on having to make solder bridges might I suggest you could have used the leads from the components to make the connections. Just solder the component in place then bend the lead down and solder to next point then cut.
The MAX232 is for 5V, C = 1uF,
the MAX232A is for 5V C = 0.1uF
the MAX3232 is for 3V or 5V, C = 0.1uF
Nice little build. Cheers!
Eric William -MKme Tech Hey there thanks for the comment. Yeah this is just one of those handy little guys that you always think about making but never do lol.
Would you recommend not clipping off the extra tail left off after soldering down the capacitors and use the tail to bridge the gap between the capacitor and the pin of the IC rather than making a solder bridge? I found this saves solder and is less finicky.
Great...nice work ✌️
I always keep a tub with component leads i have cut off, and use those to make connections instead of trying to mess around with making solder bridges. I just find it so much easier, but I am sure some people don't want the hassle of keeping component leads lol
Ashley Pratt Same here. They make great bridges.
Ashley Pratt Yes that is a great idea. Thanks for the comment.
Great video.. Thank you... My project requires rs232 at no more than plus or minus 5Volts(I think it's known as Low Level RS232)..Is there a simple way of limiting the Voltage swing on your device...Thank you in advance..John...Bristol..UK
What is the device you are connecting? Normally if there is 5V involved it is usually on the TTL side and is +5V = 1 0V = 0 but on PC's and other DTE/DCE devices they are usually -12V = 1 +12V = 0 something like that. If it is a different way the chip I use the MAX232 chip will not work with it since it is charge pumping to +/-12V logic for standard DTE/DCE deviecs. Maxim semi may may another type for what you need you may just have to check their website. Or Texas instruments would be another good place to check.
misperry Thank you for your reply..In the last 24 hours, the problem has gone away! I was trying to configure a Gamma 868 radio transceiver from RF Solutions in the UK..Their manual said that to achieve this! I would need 'low level rs232' serial with a max of 5Volts.. After many hours of getting no response from the module, I found that the manual was incorrect ! It simply needed TTL serial.. Strangely, RF solutions insist it's rs232...I disagree.....So thank you again for responding, but the problem is now solved..Thank you for great videos..John
Could you use a usb female micro B instead of vga?
Well all this device does is convert the voltage levels. It does not do the USB to Serial conversion. It simply changes TTL voltage levels 0V to +5V convert to -12V to +12V. You could use a usb micro connector but remember it does not convert the usb to serial you would need a FTDI chip like FT2232D that will perform the USB conversion to RS232.
i not have this port can this module port convert to usb?
hey sir , I like the video and how you put everything together, I am doing a project that involves the use of RS232 to TTL converter . I want to test the device and see if there is any data is sent or received ?
I am using a PIC kit 2 (44-demo pin ) and i want to send data from My pc to the micro controller ? thank you
No details on video. Wtf
Mess
What did you use it to do?
This is one of those handy devices to have in your lab. It allows you to connect a PC straight to a microcontroller. A PC uses -12 to +12V for it's serial signaling where a micro only uses TTL (transistor to transistor logic) that is only 0 - 5V. Thus, the need for the converter so you don't smoke your micro.
misperry, can you use it to have your microcontroller communicate to RS232 devices, like a serial printer or control a projector TV? Do uou need a special Aduino IDE to use it?
As long as you know the serial protocol for the RS232 device you are wanting to control you can connect a microcontroller to the TTL side of this converter and then the RS232 device to the RS232 side of the converter. All it is, is a level converter to convert the 0 to 5V logic into the -12V to 12V RS232 levels.